		body {
			margin: 0;
		}
		
		video {
			position: fixed;
			right: 0;
			bottom: 0;
			min-width: 100%;
			min-height: 100%;
			z-index: -9999;
			width: auto;
			height: auto;
		}
		
		.div_box {
			width: 1000px;
			height: auto;
			float: left;
		}
		
		.div_box2 {
			width: 500px;
			height: 320px;
			float: left;
			position: relative;
			left: 400px;
			top: 150px;
			background-color: white;
			opacity: 0.3;
			border-radius: calc(10px);
		}
		
		.div_box2_title {
			height: auto;
			width: 100%;
		}
		
		.div_user {
			width: 80%;
			height: 50px;
			margin-top: 5px;
			margin-left: 20%;
			float: left;
		}
		
		.div_pwd {
			width: 80%;
			height: 50px;
			margin-left: 20%;
			float: left;
		}
		
		h1 {
			display: block;
			text-align: center;
			height: 10px;
		}
		
		label {
			width: 10%;
			height: 20px;
			font-family: "宋体";
			font-size: 14px;
			line-height: 20px;
		}
		
		.input_user_pwd {
			width: 50%;
			height: 25px;
			border: 2px black solid;
			border-radius: 4px;
			padding-left: 10px;
			line-height: 25px;
		}
		
		.input_btn {
			border: 1px #C1C1C1 solid;
			font-family: "宋体";
			font-size: 14px;
			width: 60px;
			height: 30px;
			background-color: white;
			cursor: pointer;
		}
		
		#login_tip,
		#pwd_tip1,
		#pwd_tip2 {
			font: "宋体";
			height: 10px;
			font-size: 4px;
			color: red;
			margin-top: 0;
			padding: 0;
			margin-left: 100px;
			line-height: 10px;
		}